Summary
Chan Wing Yan, a young police officer, has been sent undercover as a mole in the local mafia. Lau Kin Ming, a young mafia member, infiltrates the police force. Years later, their older counterparts, Chen Wing Yan and Inspector Lau Kin Ming, respectively, race against time to expose the mole within their midst.
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Cast
Andy Lau Tak-Wah
Lau Kin-Ming
Tony Leung Chiu-Wai
Chan Wing-Yan
Anthony Wong Chau-Sang
Wong Chi-Shing
Eric Tsang Chi-Wai
Hon Sam
Kelly Chen
Lee Sum-Yee
Sammi Cheng Sau-Man
Mary
Edison Chen
Young Lau Kin-Ming
Shawn Yue Man-Lok
Young Chan Wing-Yan
Elva Hsiao
May
Chapman To Man-Chat
Silly Keung
Gordon Lam Ka-Tung
Inspector B
Berg Ng Ting-Yip
Senior Inspector Cheung
Wan Chi-Keung
Officer Leung
Chaucharew Wichai
Paul
Dion Lam Dik-On
Del Piero
Tony Ho
Suspect
Courtney Wu
Stereo Shop Owner
Hui Kam Fung
Cadet School Principal Yip
Lee Tin-Cheung
Double 8
Benjamin Yuen Wai-Ho
CIB Team
Wong Chi-Wang
CIB Team
Addy Sung Gam-Loi
CIB Team
Tam Kon-Chung
CIB Team
Che Jan-Bong
CIB Team
Simon Yu Sai-Tang
Sam's Follower
So Wai-Nam
Sam's Follower
Leung Ho-Kai
Sam's Follower
Terry Lee Ji-Ming
Sam's Follower
Chow Pok-Foo
Sam's Follower
Chang Kin-Yung
Policeman